https://doi.org/10.1140/epja/s10050-024-01245-2
Regular Article - Experimental Physics
Studies of nuclear equation of state with the HIRFL-CSR external-target experiment
1
Department of Physics, Tsinghua University, 100084, Beijing, China
2
Institute of Modern Physics, Chinese Academy of Science, 730000, Lanzhou, China
3
School of Science, Huzhou University, 313000, Huzhou, China
4
Department of Engineering Physics, Tsinghua University, 100084, Beijing, China
5
Department of Modern Physics, University of Science and Technology of China, 230026, Hefei, China
Received:
19
July
2023
Accepted:
8
January
2024
Published online:
16
February
2024
The Heavy Ion Research Facility in Lanzhou-Cooling Storage Ring (HIRFL-CSR) external-target experiment (CEE) under construction is expected to provide novel opportunities for the studies of the thermodynamic properties of nuclear matter, in particular the nuclear matter equation of state (nEOS), with heavy ion collisions at a few hundreds MeV/u beam energies. Based on Geant 4 packages, the simulations of the detector responses to the collision events generated using transport model are conducted. The overall performance of CEE, including the geometric coverage, the momentum resolution of tracks and the particle identification ability has been investigated. Various observables proposed to probe the nEOS, such as the production of light clusters, 
yield ratio, radial flow, 
yield ratio and neutral kaon yields, have been reconstructed. The feasibility of studying nEOS beyond the saturation density via the aforementioned observables to be measured with CEE has been demonstrated by using the ultra relativistic quantum molecular dynamics (UrQMD) simulation data.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
